Thill-coupling



(Model.)

P. 1E'. PETERSEN.

` THILL -GOUPLING- No. 250,747. Patented 1)e0.13,1881.

. l l I N Enns mme@ mlm, mlm. wnahmsmn. D c Q Y UNITED STATES PATENT OFFICE.

PETER F. PETERSEN, OF DAVENPORT, IOWA.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 250,747, dated December 13, 1881.

Application filed April 30, 1881. (Model.)

To all whom it may concern.-

Beit known that I, PETER F. PETERsEN, of Davenport, in the county of Scott and State of Iowa, have invented certain Improvements in Thill-Oouplings, of which the following is a specification.

The object of my invention is to produce a coupling from which it will be impossible to detach the thill when in use, which shall be extremely cheap and simple in construction, which shall permit the ready detachment and attachment of the thill, and which shall be noiseless in operation.

To this end it consists in the combination of a head having eccentric hook-shaped jaws, a thill-iron having a cross-arm or journal thereon, and a rubber block secured between the jaws, all as hereinafter explained in detail.

Referring to the accompanying drawings, Figure l is a perspective view of my device as it appears when in use; Fig. 2, a longitudinal vertical section through the center of the same, with the thill-iron detached, but in position for introduction.

A represents the body of the coupling; B, the thill-iron, and C the elastic cushion.

The body A is constructed with a clip, a, to encircle the axle, and with a forwardly-extending shank or body, b, the forward end of which is fashioned into two parallel vertical plates or cheeks, c, each ot' which is provided with an` opening, d, in its side, the opening extending, as shown, from the top downward to permit the introduction ofthe thill-iron. The forward sides or edges ot' the openings d are curved, as shown at e, gradually approaching the rear wall as they descend.

The elastic block C, of rubber or equivalent material, is a solid rectangular pieceintroduced between the rear ends of the jaws or cheeks c, and secured firmly in place by means of a transverse bolt or pin, g, the forward edge of the rubber projecting usually in advance of the rear sides of openings d.

The thill-iron B has its end provided on opposite sides with two flattened laterally-projecting journals or trunnions, h, as clearly rep resented in both gures, the end of the arm being preferably extended slightly in rear of the journals, as shown at i. The thill-iron is applied by placing it in an upright position, as shown in Fig. 2, and dropping its journals into the openings d in the cheek plates or jaws, the parts being of such construction that the iron may be thus applied without resistance. After being inserted, as above, the iron is turned downward from an upright to a horizontal position, as in use. During this motion the front edges of the journals h move against and are crowded backward by the curved edges e of the cheek-plates, thereby crowding the rear end of the thill-iron backward iirmly against and into the rubber block,'as represented in Fig. 1. When the parts are in this position the thill-iron will be held securely, its escape prevented, and any rattling or jarring of the parts avoided.

I am aware that many couplings have been constructed wherein the thill-irons interlock with retaining-jaws, both with and withoutelastic cushions therein. My deviceis deemed, however, superior to those hitherto constructed.

Having thus described my invention, what I claim is 1. In combination with the thill-iron B, having laterally-projectingjournals h, body A, provided with the top openin g, d, and the edges e, curved eccentrically with relation to the lower rear corner of the opening, and the rubber block C, inserted as shown and described.

2. The body A, having two side arms, each arm provided with an opening, d, having a substantially vertical rear edge, and a front edge curved eccentrically with reference to the lwer rear corner of the opening, in combination with the elastic block Gand the thill-iron B, provided with lateral trunnions H, whereby the trunnions are forced rmly against the cushion and downward into the rear corners of the openings d.

PETER FREDRICH PETERSEN.

Witnesses: y

JOHN AYE, Jr., JOHN NIssEN. 

